Hydrodynamic voltammetry at membrane-covered electrodes

Anand I. Bhatt; Robert A W Dryfe

doi:10.1016/j.jelechem.2005.07.009

Hydrodynamic voltammetry at membrane-covered electrodes

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Abstract

The modification of platinum electrodes with commercial filtration membranes is used to study the interplay between solution and membrane mass-transport in non-aqueous solution. Two types of commercial membrane, "track-etched" polyethylene terephthalate and γ-Al 2O3, are employed. Voltammetric and amperometric data is obtained under both hydrodynamic (rotating-disc) and stationary conditions, which is interpreted in terms of a pinhole model. Contrasting behaviour is seen for the different membranes, which can be understood by consideration of the membrane thickness relative to the diffusion layer established in solution. In particular, overlapping diffusion behaviour is observed for the much thinner polymer membranes under hydrodynamic conditions. © 2005 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	131-140
Number of pages	9
Journal	Journal of Electroanalytical Chemistry
Volume	584
Issue number	2
DOIs	https://doi.org/10.1016/j.jelechem.2005.07.009
Publication status	Published - 15 Oct 2005

Keywords

Hydrodynamic amperometry
Membrane-covered electrode
Rotating disc electrode
Voltammetry

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10.1016/j.jelechem.2005.07.009

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title = "Hydrodynamic voltammetry at membrane-covered electrodes",

abstract = "The modification of platinum electrodes with commercial filtration membranes is used to study the interplay between solution and membrane mass-transport in non-aqueous solution. Two types of commercial membrane, {"}track-etched{"} polyethylene terephthalate and γ-Al 2O3, are employed. Voltammetric and amperometric data is obtained under both hydrodynamic (rotating-disc) and stationary conditions, which is interpreted in terms of a pinhole model. Contrasting behaviour is seen for the different membranes, which can be understood by consideration of the membrane thickness relative to the diffusion layer established in solution. In particular, overlapping diffusion behaviour is observed for the much thinner polymer membranes under hydrodynamic conditions. {\textcopyright} 2005 Elsevier B.V. All rights reserved.",

keywords = "Hydrodynamic amperometry, Membrane-covered electrode, Rotating disc electrode, Voltammetry",

author = "Bhatt, {Anand I.} and Dryfe, {Robert A W}",

note = "CAN 144:12857 72-2 Electrochemistry Journal written in English. 1344-28-1 (Alumina); 7440-06-4 (Platinum); 25038-59-9 Role: DEV (Device component use), USES (Uses) (electrochem. redn. of p-chloranil on polyethylene terephthalate membrane-modified platinum electrode in MeCN and alumina membrane-modified platinum electrode in nitrobenzene); 118-75-2 (p-Chloranil) Role: RCT (Reactant), RACT (Reactant or reagent) (electrochem. redn. on polyethylene terephthalate membrane-modified platinum electrode in MeCN and alumina membrane-modified platinum electrode in nitrobenzene)",

year = "2005",

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doi = "10.1016/j.jelechem.2005.07.009",

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AU - Bhatt, Anand I.

AU - Dryfe, Robert A W

N1 - CAN 144:12857 72-2 Electrochemistry Journal written in English. 1344-28-1 (Alumina); 7440-06-4 (Platinum); 25038-59-9 Role: DEV (Device component use), USES (Uses) (electrochem. redn. of p-chloranil on polyethylene terephthalate membrane-modified platinum electrode in MeCN and alumina membrane-modified platinum electrode in nitrobenzene); 118-75-2 (p-Chloranil) Role: RCT (Reactant), RACT (Reactant or reagent) (electrochem. redn. on polyethylene terephthalate membrane-modified platinum electrode in MeCN and alumina membrane-modified platinum electrode in nitrobenzene)

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Y1 - 2005/10/15

N2 - The modification of platinum electrodes with commercial filtration membranes is used to study the interplay between solution and membrane mass-transport in non-aqueous solution. Two types of commercial membrane, "track-etched" polyethylene terephthalate and γ-Al 2O3, are employed. Voltammetric and amperometric data is obtained under both hydrodynamic (rotating-disc) and stationary conditions, which is interpreted in terms of a pinhole model. Contrasting behaviour is seen for the different membranes, which can be understood by consideration of the membrane thickness relative to the diffusion layer established in solution. In particular, overlapping diffusion behaviour is observed for the much thinner polymer membranes under hydrodynamic conditions. © 2005 Elsevier B.V. All rights reserved.

AB - The modification of platinum electrodes with commercial filtration membranes is used to study the interplay between solution and membrane mass-transport in non-aqueous solution. Two types of commercial membrane, "track-etched" polyethylene terephthalate and γ-Al 2O3, are employed. Voltammetric and amperometric data is obtained under both hydrodynamic (rotating-disc) and stationary conditions, which is interpreted in terms of a pinhole model. Contrasting behaviour is seen for the different membranes, which can be understood by consideration of the membrane thickness relative to the diffusion layer established in solution. In particular, overlapping diffusion behaviour is observed for the much thinner polymer membranes under hydrodynamic conditions. © 2005 Elsevier B.V. All rights reserved.

KW - Hydrodynamic amperometry

KW - Membrane-covered electrode

KW - Rotating disc electrode

KW - Voltammetry

U2 - 10.1016/j.jelechem.2005.07.009

DO - 10.1016/j.jelechem.2005.07.009

M3 - Article

SN - 0022-0728

VL - 584

SP - 131

EP - 140

JO - Journal of Electroanalytical Chemistry

JF - Journal of Electroanalytical Chemistry

IS - 2

ER -

Hydrodynamic voltammetry at membrane-covered electrodes

Abstract

Keywords

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